七钼酸铵生产干燥技术优化研究

Optimization of Drying Technology for Ammonium Heptamolybdate Production

旨在找出七钼酸铵干燥技术的合适条件参数,以解决干燥过程中因条件不适造成的产品粉化和能源消耗问题。分别以钼含量、水含量、水不溶物、水溶性、Fsss粒度、热重分析及晶体形貌等为评价指标,系统研究不同时间、不同温度及不同送风速度对七钼酸铵干燥产品钼含量和水溶性等质量指标的影响,通过对比实验和数据分析,得出烘干七钼酸铵的合适工艺条件为:温度50~65℃,时间1~1.5 h,风速10 L/min左右。

This paper aims to find out the appropriate conditional parameters of ammonium heptamolybdate drying technology to solve the problem of product powder and energy consumption caused by uncomfortable conditions during the drying process.Taking molybdenum content,water content,water insoluble,water solubility,Fsss particle size,thermo-weight analysis and crystal morphology as evaluation indicators,the impact of different times,different temperatures and different air supply speeds on the molybdenum content and water solubility of ammonium heptamolybdate drying products were systematically studied.Through comparative experiments and data analysis,the suitable process conditions for drying ammonium heptamolybdate are:the temperature is 50~65℃,the time is 1~1.5 h,and the wind speed is about 10 L/min.